[Ardour-Users] Wiggling the sidebar: crackling noise

Gunter Königsmann gunter at peterpall.de
Fri Sep 16 22:06:00 PDT 2016

> Actually in firefox, pressing home/end on a long web page will do the
> same crackling noise in Ardour's output but, only for a few times.
> After which pressing home/end will not make any further noise.  As if
> something graphically gets buffered and during that buffering time
> resources are taken which influences the rendering of audio.  Once the
> 'buffering' is done, then the audio plays without any crackles.  Or
> something akin to that.
Sounds like an accurate diagnosis.

On startup Ardour always asks how big buffer sizes to use. Is the problem solved if this value is increased? That might then hint that there es enough CPU power available, but not fast enough to fill the audio buffer in time. Normally real-time kernels (if your system is using one and ardour has sufficient rights to request to be served in real time. If ardour hasn't been given these rights it will warn about this on startup) aren't bad in determining which things shouldn't cannot be given too much CPU power to in the current situation. But if CPU power, memory bandwith or something similar is scarce this might not be possible in all cases.

Kind regards,


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